Doll brush



FIG. 1 is a front view of a doll brush in accordance with my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a rear view thereof; and,

FIG. 4 is a front view of the doll and stand shown in FIG. 1.

The broken lines shown in all of the figures are for environmental purposes and from no part of the claim. 

The ornamental design for a doll brush, as shown and described. 